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Method for modifying a non-dioptric parameter of an optical system

a non-dioptric parameter and optical system technology, applied in the field of methods for modifying non-dioptric parameters of optical systems, can solve problems such as not being easily transferable to each optical design or produ

Active Publication Date: 2020-12-22
ESSILOR INT CIE GEN DOPTIQUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]Advantageously, by modifying both the first and the second surfaces during the modifying step it is possible to modify a non-dioptric parameter of the optical system without modifying the dioptric function of the optical system.

Problems solved by technology

This method has the disadvantage of not being easily transferable to each optical design or products.
Indeed, such method requires optimizing as many optical designs as existing products.

Method used

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  • Method for modifying a non-dioptric parameter of an optical system
  • Method for modifying a non-dioptric parameter of an optical system
  • Method for modifying a non-dioptric parameter of an optical system

Examples

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Embodiment Construction

[0066]In the sense of the invention, the dioptric function corresponds to the optical lens power (mean power, astigmatism etc. . . . ) as a function of the gaze direction.

[0067]The wording “optical design” is a widely used wording known from the man skilled in the art in ophthalmic domain to designate the set of parameters allowing to define a dioptric function of an ophthalmic lens; each ophthalmic lens designer has its own designs, particularly for progressive ophthalmic lenses. As for an example, a progressive ophthalmic lens “design” results of an optimization of a progressive surface so as to restore a presbyope's ability to see clearly at all distances but also to optimally respect all physiological visual functions such as foveal vision, extra-foveal vision, binocular vision and to minimize unwanted astigmatisms. For example, a progressive lens design comprises:[0068]a power profile along the main gaze directions (meridian line) used by the lens wearer during day life activit...

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Abstract

A method is implemented by a computer for modifying a non-dioptric parameter of an optical system including a first and a second surface. The method includes a modifying step during which the first surface and second surface are modified so as to obtain a modified optical system such that the dioptric function of the modified optical system is substantially the same as the dioptric function of the optical system.

Description

FIELD OF THE INVENTION[0001]The invention relates to a method, for example implemented by computer means, for modifying a non-dioptric parameter of an optical system, to a method of manufacturing an ophthalmic lens and to an ophthalmic lens determining device.BACKGROUND OF THE INVENTION[0002]Usually, a person needing to wear spectacles and having thus a prescription filled by an ophthalmologist or optometrist goes to the shop of an optician. The optician orders a pair of optical lenses corresponding to the prescription of the wearer.[0003]The pair of optical lenses sent to the optician are designed and manufactured according to optical criteria.[0004]Recent improvements in the field of ophthalmic lenses, have allowed providing customized optical lenses, such customization goes beyond the wearer's prescription. Further parameters than the parameters relating to the dioptric function of the optical lenses may be considered when designing and manufacturing the pair of ophthalmic lenses...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G02C7/02G02C7/06G02C7/08
CPCG02C7/028G02C7/086G02C7/068
Inventor ALLIONE, PASCALBENOIT, CELINECALIXTE, LAURENTCHENE, SYLVAINSAHLER, JEAN
Owner ESSILOR INT CIE GEN DOPTIQUE